Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock
Beginning Balance at Dec. 31, 2019	$ 29,158,027	$ 0	$ 1,138,096	$ 447,134	$ 31,494,895	$ (3,922,098)
Common Stock Shares at Dec. 31, 2019			966,132
Treasury Stock Shares at Dec. 31, 2019						171,964
Net income (loss)	56,568				56,568
Dividends declared	(212,549)				(212,549)
Ending Balance at Mar. 31, 2020	29,002,046	0	$ 1,138,096	447,134	31,338,914	$ (3,922,098)
Common Stock Shares at Mar. 31, 2020			966,132
Treasury Stock Shares at Mar. 31, 2020						171,964
Beginning Balance at Dec. 31, 2019	29,158,027	0	$ 1,138,096	447,134	31,494,895	$ (3,922,098)
Common Stock Shares at Dec. 31, 2019			966,132
Treasury Stock Shares at Dec. 31, 2019						171,964
Net income (loss)	(722,948)
Ending Balance at Jun. 30, 2020	28,125,918	0	$ 1,138,096	447,134	30,462,786	$ (3,922,098)
Common Stock Shares at Jun. 30, 2020			966,132
Treasury Stock Shares at Jun. 30, 2020						171,964
Beginning Balance at Mar. 31, 2020	29,002,046	0	$ 1,138,096	447,134	31,338,914	$ (3,922,098)
Common Stock Shares at Mar. 31, 2020			966,132
Treasury Stock Shares at Mar. 31, 2020						171,964
Net income (loss)	(779,516)				(779,516)
Dividends declared	(96,612)				(96,612)
Ending Balance at Jun. 30, 2020	28,125,918	0	$ 1,138,096	447,134	30,462,786	$ (3,922,098)
Common Stock Shares at Jun. 30, 2020			966,132
Treasury Stock Shares at Jun. 30, 2020						171,964
Beginning Balance at Dec. 31, 2020	$ 28,706,089	0	$ 1,138,096	447,134	31,042,957	$ (3,922,098)
Common Stock Shares at Dec. 31, 2020	966,132		966,132
Treasury Stock Shares at Dec. 31, 2020						171,964
Net income (loss)	$ 540,128				540,128
Dividends declared	(212,549)				(212,549)
Ending Balance at Mar. 31, 2021	29,033,668	0	$ 1,138,096	447,134	31,370,536	$ (3,922,098)
Common Stock Shares at Mar. 31, 2021			966,132
Treasury Stock Shares at Mar. 31, 2021						171,964
Beginning Balance at Dec. 31, 2020	$ 28,706,089	0	$ 1,138,096	447,134	31,042,957	$ (3,922,098)
Common Stock Shares at Dec. 31, 2020	966,132		966,132
Treasury Stock Shares at Dec. 31, 2020						171,964
Net income (loss)	$ 859,635
Ending Balance at Jun. 30, 2021	$ 29,140,626	0	$ 1,138,096	447,134	31,477,494	$ (3,922,098)
Common Stock Shares at Jun. 30, 2021	966,132		966,132
Treasury Stock Shares at Jun. 30, 2021						171,964
Beginning Balance at Mar. 31, 2021	$ 29,033,668	0	$ 1,138,096	447,134	31,370,536	$ (3,922,098)
Common Stock Shares at Mar. 31, 2021			966,132
Treasury Stock Shares at Mar. 31, 2021						171,964
Net income (loss)	319,507				319,507
Dividends declared	(212,549)				(212,549)
Ending Balance at Jun. 30, 2021	$ 29,140,626	$ 0	$ 1,138,096	$ 447,134	$ 31,477,494	$ (3,922,098)
Common Stock Shares at Jun. 30, 2021	966,132		966,132
Treasury Stock Shares at Jun. 30, 2021						171,964